Apparatus for determining code of keys for cylinder locks



H. HANSEN Feb. 12,1935.

APPARATUS FOR DETERMINING CODE OF KEYS FOR CYLINDER LOCKS 2 Sheets-Sheet1.

Filed Jan. 5, 1931 BYM I INVENTOR A TTORNE Y5 Feb. 12, 1935. H. HAYNSENY Y 1,991,151

APPARATUS FOR DETERMINING CODE OF KEYS FOR CYLINDER LOCKS Filed Jan. 3,1951 2 Sheets-Sheet 2 BY v . a L Q 2;

A TTORNEYS lowing claims.

Patented Feb. 12, 19 35 i Q t V v t y v r p 1,931,151 APPARATUS-FORnr'rnammmciconnor L, KEYS FOR cYLI nEn LocKsj Herman HansemNewYork, N.Y.',' assignorftd g Francis'JKeil & Son,' Inc.', a corporation of New-xYork t: Application Jan s-ye, 1931, sw rm, 506,374)

' 33 Claims: (ores- 174) g "This invention relates togan apparatusfor-"de certain features oi my invention, mayl at this termining thecode of keysy for cylinder locks. point: he ,noted that locksmiths arefrequently OIIEDf. the objects of this .iIlVGIl'tlOIlIlS to procalledupon to, fit a key to a c linder lockoperat vide asimple andpracticalapparatus for, deing mechanism and according to ce'rtain past ,5terminingl. the code of the key for operatinga practice such fitting ofa new keyhas beenall cylinder lock sothatakeymay be madeupfrom greatlyfacilitated bythe fact that thelock mecha 'keymblank according to the,code thus asceranism itself has in many instances been stamped tained.Another object 51130 provide anappara with thecode 'numbers oi: thecorresponding ,keys. tusoi the 1 above-mentioned character that, canlwhilethis has facilitated the work of the-lock 1be:manipulatedsandoperated in practice speed smith, it has at the sametime :made all 'too v ily with a1high degree of. convenience,accuratereadily available to unauthorized persons the 1y,andiinexpensively; Another object is to proexact informationgii'om whicha key to fit that vide an apparatus or the above-mentionedcharparticular lock can be reproduced inasmuch as it 1 acter that willbe of simple and inexpensive coniis a relativelysimplematter tQOllt thenecessary struction, small and compact, thoroughly accudeths offnotchesinQa cylinden-key where the 5 rate and dependable in action, andcapable of code number for that key is known. .,'I?his def great easeand speed of manipulation. Otherob- .ciency, has patricularly madeitself felt mane jects will be in; part obvious or in part pointedautomobile field; out hereinafter. In accordance with certainlfeatures;of my in- The invention accordinglyconsists in the rea vention, I avoidthe necessity -;ot;,havingto stamp tures of construction, combinationsofelements, the key code: number ontthe lock mechanism itand arrangementsof. parts, all as willbeillus- ,selfand I have providedamethod andapparatus trativelyidescrib'ed herein, and the scope of the fordetermining the key'code numbersfromthe application of which vwill beindicatedin thefolloclcmechanism so that-the flagrant display of In theaccompanying: drawings in which is is not at allnecessaryu In-casepa newkey has shown-a preferred form of thevariouspossible tOvbe" provided,my-'invention provides a con1- embodiments of the mechanical featuresofmy venient'niethod and apparatus for determining invention, the codenumber of the key to-suit that lock.

,30 Figure 1 is a vertical central sectional view of Referring now tothe drawings, and more par-- the line 5 50f Figure 1;

"a cylinderlockmechanism; I ticularlyto Figures 1-, 2, l and 5,I-haveshown "Figure 2 is a planview of akey suited to'opat 10 what mayb'econsideredto be a door or the crate the mechanism of Figure 1;; 1 '3liketowhich is attached, in any suitable manner, Figure 3is a'plan viewofian implement for acylinder lock-operatingmechanism'whichmay thjecode' number on pthe lock mechanis'm-itseli g5 preparing the lockmechanism for the applica- "include a casingll within which is rotatably35' r mounted the key cylinder- 12,,the latter having Figure 4 is an endelevationalyi'ew, as .seen suitableconnection as by the bar 13, tothebolt from-the rightof Figure 1; V i l orlatch mechanismqmotshown)itselt 1 Figure Bis a vertical cross-section, as seen on i The keycylinder l2 is provided witha keyslot i I 91,4 (seeIFigures-land 4)which, in endview or in Figure 6 is a side elevation of the apparatuscross-section, maybesuitably shaped, as :byipr oemployed in my method; l'1' jections 14. 14* etc., to'prevent' the insertion Figure '7 is an endview, asseen from the left therein ofa key; unless the latter hasappropriate of Figure 6; longitudinally extending-grooves;within whichtion of the apparatus;

' FigureB is a view of the apparatus similar to these projections arereceived; 'Normally. the key 45" thatofiFigure =6; but showingitsiapplication ini- :cylinderlZ-is preventedrfrom being rotated tolopatially to the cylinder lock-operating mechanism a crate thelock or latchmechanismbykey-engag- 'ofFigure 1 in one step of myprocesaand ing;devices or tumblerswhich maybe of; any Figures 9, l0 and. ii are viewssimilar'to that suitable numbcr land which ;are illustratively 5 01"Figure 8, illustrating a'few'oi the subsequent shown inthe drawingsasfive' in number; these ,50

steps ofmymethod. H tumblersar shown in Figure 1 at15;-1'6, 17,

-"Similarreierence characters refer to similar l8,,and 19. f H

' :parts throughout the several views of the drawa- Tumbler 115E 19amay, insoiar asscertainwf ea- 'ings; 1 1 i \tures. ,ofymfi inventionareconcerned, take lany As.;conducive to a clearer;understanding-prsuitable crappropriateiorm, but they1 are .pref

30 this relation is 56 generally inline with 14, is to 70 crating bar 13tratively shown in reference may again be made to Figure 5 wherein wafer15 will be seen to be of a generally rectangular shape slidably receivedwithin a slot in the J key cylinder 12. The upper and .lower ends, asseen in Figure 5, of the wafer 15,- are curvedto 15 substantially thesame radius as that of the key cylinder 12, the longest '15 beingnotgreater than cylinder 12. If, therefore, wafer 15, and, with it thereniaining'wafers of the lock mechanism,

dimension of the wafer 20 is positioned so that its end curved edgescoincide with the outer cylinder surface of key cylinder 12, the lattermay be rotated with respect to the easing 11. It is, of course, thefunction of the key thus toposition these wafers to permit this rotationto take place;

7 Normally, however, the lower ends of the wafers i are received withina longitudinally extending slot 25 in the casing 11; this relation ofthe parts is clearly shown in both-Figures 1 and 5. Normally, maintainedby means of a spring 26that forces the wafer 15 downwardly and holds itin the position shown in Figure 5. Spring 26 is preferably a helicalspring oneend of which bears against and is held by a lateral projection270i the wafer 15, this projection 27 being received in a suitable cutaway portion'28 in the key cylinder 12, while the upper end of thespring 26 is received within a bore 29 in thekey-cylinder 12, Ithespring being held in a suitably compressed state by means of a smallscrew 30 threaded into the upper end of the bore 29. A similar springarrangement is, of course, associated with each of the'remainingwafers;v

, As is better shown in Figure 1, wafers 15, 16,

" 17,18 and 19 are slidably carried in'suitable guideways or slots 20,21, 22, 23 and 24, respectively formed in the key cylinder 12 and areprovided with rectangularly shaped apertures: 31, 32, 33, 34'and35,respectively, these apertures being the key' slot 14. In Figure I 5 therectangularly shaped aperture 31 of wafer 15 is better shown. Theseapertures are of varying dimension in the vertical directiomas viewed inFigure 1, and, with all of the Wafers pressed downwardly by theirrespective springs so that the lower edge faces thereof abut against thebottom' wall of theslot or channel 25 (Figures 5 and 1) in the-casingl1, the upper portions of the wafers present'or form projections ofvarying o lengths directed downwardly into the key slot 14 in thecylinder 12. It is by these projecting portions, of different lengths orof different combinations of diiferentlengths (or depths) that asuitably notched key, when inserted into the key slot lift all of thewafersthroughout the same distance and, moreover, throughout such adistance as will just lift the lower portions of all of the wafers outof the slot or channel 25, 7 thus to permit thefkey cylinder 12andlock-opto be rotated with respect to the casing 11. i r a Withalockhaving five :wafers, as is illus- Figure 1, a. key having five stations,with anotch of suitable depth at each 75 station,"is' necessary, and inFigure 2 I have shown the diameter of the key being spaced vertically inplan view a key 36 with the stations indicated by the numerals '1, 2, 3,4 and 5.

For purposes of illustration, I have shown a lock construction in'Figure1 in which the wafers are so shaped that, to whose code number is 33511is provided; this means that wafers 15 and 16,,corresponding to stations1 and12 of the key '(see Figure 2) are the same, the wafers l8 and 19corresponding to stations 4 and 5 on the key are also the same, andthat'wafers 18 and 19, corresponding to stations 4 and 5,,have upperportions projecting into the key slot by a distance of one unit, wafer17 has an upper portion thus projecting into the key slot 14 by adistance or depth of five units, and wafers 15 and'lfi have projectingportionsof three unitslength. a 7 Or, stated differently, in order to'lift all of these wafers or disks, as they are sometimes called,throughout the same distance, a key, like that of Figure'2,*must'beprovided in which the notches corresponding to stations land 2 must bethree times as deep as the notches corresponding to stations 4 and 5 andthe notch corresponding to station 3 must be five times as deep asthatof station 4 or 5; in Figure 2 I have shown these notches proportionedin substantially this way with respect to one another. V o 1 The unitsrepresented by the individual numbers making up the code number of thekey may vary depending upon the manufacture or style of lock or the likeand purely by way of illustra-- tion these units of measure may, forexample, be

0.012 inch; that is, referring to Figure 2, the f 2 'arefeach 0.036inch' notches of stations 1 and in depth, the depth of the notchofstation 3 is 0.060 inch, the depth of the notches of stations 4 and 5is 0.012 inch; It is to be understood, however, that these units ofmeasureare purely arbitrary and, in fact, vary with the code by anyparticular lock manufacturer;

Considering now how, in accordance'with certain features of myinvention, I proceed to determine the code number 33511 of the lockmechanism of Figure 1,"I first run into the key slot 45 14 an implementlike that shown in Figure3; this implement has a handle portion 37, arestricted operate the look, a key adopted shank 38, and a downwardlyrounded end portion 39. By running this implement back and forth alongthekey slot 14 so that the end portion 39 rides along the bottom edge ofthe key slot,'all of the wafers 1519 are positively forced downwardlyinto their lowermost position. The various springs 29 (Figure 5) shouldnormally force these wafers into their lowermost position butthe variousparts sometimes stick, due to various factors that are sometimes hard toeliminate, but, by means of the implement 37-'39, I am enabled to insurethat all of the wafers are properly positionedfor subsequentdetermination of the depths thereof. 7 V.

In Figures 6 and 7 I have shown apreferred form of mechanism for thusdeterminingthe depths and before considering the manual manipulationrand theoperation thereof, it might first be pointed out that thismechanism includes a plate-like member 40 provided at its left-hand endwith a straight-edged prong 41 whose lower edge face 42 is exactly atright angles to the left-hand end face 43 of the member 40.Projecting-to theleft from the end face 43 are two vertically spacedprojections 44 and 45, these projections "having a width in'a'horizontal' direction and such that they may be 7 snuglyreceivedWithin the right-hand end portion 14 of, measurement; corresponding tothe particular code; Bearing in mind the code of the lock mechanism, aswas described in detail hereinabove, and recalling that the code numbercorresponding to wafer 15 is'f3, this resetting positions the gage 54 insubstantial alinement with the lower edgeof the upper portion of thewafer 15, as is clearly shown in Figure 9.. The operator their attemptsto move plate 47 to the left, and, in' view of the above-mentionedalinement, the

' plate 47 moves, to the, left, gage 54 passing through the rectangular'openingin wafer 15 and thus by-passing the key-engaging device 15;whereupon furthenmovement ishalted by pawl 62 sliding into notch 57corresponding. to station number f1- of thekey. The relation of theparts atthis stage is fully shown in Figure and from the graduations 56.the operator parts in the position shown .in1Figure-10, he

knowsthat the codenumber is .3 and from the notchinto-which the pawl 62has passed, he knows thatthiscode number 3 corresponds-tostationnuinberffl on the key, the pawl thus acting also as an indicatorof the station;

"The operator then proceeds in a similar mannerto; determine thecodenumber of the next station or notch of the key-corresponding towafer 16"and as'a first step, starting with the swings operating arm '55downwardly into the number fli position, asis indicated by the.graduations 56 and as is shownin Figure 11. Thisoperation*resultsinlifting pawl 62 outof notch 57', thus'permitting movement of plate 47and of gage 5 4in a direction toward the left-until gage member 54 abutsagainst wafer 16 which,

itfwill be recalled, is shaped like wafer and corresponds to'a codenumber"3.-for station or notch number-2; on thekey, The operator thenrepeats the steps outlined above and has the code .40

number of wafer 16 indicated to him by one of. the graduations56 andthestation number indicated by oneof the'notches with which pawl62coacts,

f These steps are repeatedfor each succeeding wafer and bysuccessiverepetitionsof the above- ;mentioned steps; the operator will find thatpawl 62 slides into notch 58 (station 2) when the 1 arm 55 stands at theindication 3, that pawl.62

of lock, the locksmith thereupon'proceeds to cut the notches of therequisite depth for the corresponding stations of the key, all as willbe clear fromaiconsideration of Figure 2.

It will thus be seen that I have provided in my invention an apparatusin which the various objects hereinbefore noted, together with manythoroughly practical advantages, are successfully achieved. It,willfbe-seen that the mechanism is simple, compact, and substantiallyfool-proof and also it'will be seen that the apparatus of u .myinventionis well adapted'to meetthe varying. conditions of practicaluse.

Iclaimp V r In a device .of the character described, in

to be engaged and lifted by a key;

any of said devices of, said gagebeing 'versely of; the line of-movement of said slidable combination, means having "a portioninsertable into thekeyxslotiof a key cylinder, means supported by-an'dmovable with respect thereto, in

a direction along the line. ofthe tumblers pro- J'ecting into, the keyslot, a gage adjustably carried by said movable means andadapted'tobefp'ositioned at any one: of a plurality of different heights relativeto the line of movement ofsaid movable means,.indicia for indicating theadjustment of said gage, and means for preventing movement of saidmovable means with said gage in a direction inwardly of said key slot bya distance greater than the spacing between two successive tumblers .insaid key cylinder;

2. In a device of the character described, in

combination, means having a portion insertable into the key slot of akey cylinder, means supported by and, movable with respect thereto in adirection along the line of the tumblers projectinginto the key slot,a'gageadjustably carriedby said movablemeans and 'adaptedto bepositioned at any one of aplurality of different heights relative to'theline of. movement ofsaid movable means, indicia for indicating theadjustment of said gage, and indicating means for indicating the stationof a tumbler by-pas sed by 7 said gage.

3. Ina device of the character described,cin

combination, a frame member having. means adapted to fit'into a key slotin a key cylinder without obstructing access to .the devices..pro--J'ecting into said key slot and that are intended to be engaged andlifted by. a key; a member slidably carried by said frame and relatedxtothe latter for movement. in a direction lengthwise of said key slotyagage carried. by said slidable member andadapted to enter thekey'slot'and engage any of said devices positioned in advance thereof,said gage being 'shiftable in a direction transversely of the line ofmovement. of'said slidable member to cause said gage to by-pass anobstructingkey-engaging device; and indicia for indicating theby-passing height of said gage; i 4. In a device of the characterdescribed, in combination, a frame member having means adapted to fitinto a key-slot in a key cylinder without obstructing access to thedevices projecting into said key slot and that areintended a memberslidably carried by said frame and relatedrtoi the latter for movementin a direction lengthwise 'of said key slot; a gage carried by saidslidable memberand adaptedto" enter the key .slot and engagepositionedin advance thereshiitable in a direction transmember v tocause said gage to by-pass an :ob-

structing key-engaging device; indiciafor indicating the by passingheight of said gage; and .meansoperating upon said slidable member forpreventing saidgage from by-passing a succeeding key-engagingdevice;

5. In a device: of the character described, in

combination, a draineqmember, having means adapted'to fit into1akeyislot in a key cylinder without obstructing access to the devicespro- ,jecting into said key slot andgthat'are' intended to be engagedand lifted by akey'; a. member slidablycarried by said frame and relatedto the. latter for movement in 'a direction lengthwise of said key slot;a gage carried by said slidable memcf, said gage being shiftable in-adirection transversely of the lineof movement of said slidable V ber andadapted to enter the key'slot and engage anyof said devices positionedin advance there- Len-net member to cause" saidj gage to by-pass 1 anob-V 6i In --a*device of the character "describedfin cornbination, aframe? member havingmeans adaiit'ed toz fit into a keyslot in a keycylindef without bbstructing access to the devices -pro-' iectin'g'mtosaid *keyslomand that are intended ito be engaged and lifted by a; key;;a member slidably; carried L by said frame. andrelatedto the latte'rlrformovement in l a direction" lengthwise membe and adapte'd to enter"the key slot and engage any: of saiddevice's positioned in advancethereof, 1 said gage being 5 shiftable in" transversely ofthe line'o'fmovement of' saidislid ableime'mbefto cause said gage to by-passtanobstructing keyengaging device; indicia for indi'c atin'g th Icy-passingheight of said--gage;

' m'enibe'r relative to said fraine to take place in steps correspondingeach to a key-engaging die-'- I vice intsaid key cylinder; andindicating -means foi indicating said steps. l i L'Ii'In'; a device ofthe character described, in" combination, a .frame member having meansadelptedto fit' into a key islot ina keycylinder' with-out obstructingaccess 'to the devices projectinginto said key? slot and that areintended toibevengaged'aandilifted by a key a member slidably carried bysaid frame and related to'the latten fonzmovement:.in a directionlengthwise ofisaidikey slot a .lgage icarriedtby. said slidabl'e memberandadapted toenter the key slot. and

engage-: nny:.;of said devices positionediin advance thereof;said.gageabeingxshiftable ina direction transversely? ofithe line ofmovementfof said slidableimember tozcause saidigageito .byi-ipass anobstructingi key-"engaging. device; indicia lfor in-.- dicatinglltheby-ipas'sin'g height of said: gage; :and'me'ansz;controlled'bysthetposition of said gage lfOI. causing the-:1movement aof-w said" slidable member? withithex'gagercarried-?thereby-to take" place: stepby-step.

a8. L81? device?- tofir .the character. described; i in combinatiom 5a.frameihmember :having :means: adaptedrtoazfitiintoia ikey 2s1ot:in. a:key cylinder withoutiobstructing accessito the zdeviceslprlojecte;ing'r'into saidiske'yslot andzrthat are 'intendeditoi bet engaged- "and;lifted by": a: key} aimember slidahiy cairiedsibyl said" Fframej 'andrelated'cto r the latter for-movement in' 2a 'direction lengthwise 0f: 5said key-slot; wakga'ge'zcarried "(by said: islidable membeniandaadapted"to enter .the key-slot and engageianm-ofsaididevices'zpositionediinradvanceL thereonsaid 1 gage fbeing:shiftable in la :directi'on transversely of the"1ine ofamovement of:said slidable cmen'iber to :cause saidxgage tofib'y'- pa:ss an=1obstnuctingztkeysengaging device; vindicia fori indicating thelay-passing height tofzsaid gagei an'iifaspawl :icarriedtb saidislidablemember, said fnameishaving :a; :plurality .of notches with which Zsaidrzpawl:mayicoactnone for teach key-gengaging deviiceeinr'saidkeyicylinder andtspacedi siibstan tiallyrilikezsaid deviceslare 'spaced,said pawl rid 1 ingmoinpletelyrintoia notch :only-upon completion Ofithibyepassingmovement: of said gage.

iQEIIXI awdevi'ce of the character described, in

combination, a frame men bei having means adaptedf to fit' intoi a keyfs'lot'fina *key cylinder. withoutobstructing access to the de'vices" pr dj eat- 1 dicating the Icy-passing height having" aplurality" ofnotches" with which *said irection' iv an adjustable gage 'ca ffitransversely of the line of" movement of saidjslidi sneez ng";"keyngaging device? pawl a coactfonejfoi"cach keyengaging 'd'ev i d l eycylinderand spaced substantially devices are* spaced','j said} pawl 1idin'g cc'rn'yiletly iiito a notchonly upon completion oi the {bynass'ingf o ement of said gage; and m' eans responsivefto resetting ofsaid gagemem b-er} fordi'sengaing said pawl from" a notch;

10f ln' a devic'e; of the character describedfin,eembinatiorfi-agpair'of members 'oneof-whichfis means for causing themovement of -sa;1d' slidab1e adapted to be alined with respect' tothe'key'slot in-akeycy1inderandthotherof which is slidablycaifi'ied by'"Samara-mentio d 'membei 'for movement a direction jlengthwise of the'key sl'otjone ot-said membe s having a" plurality {of notches; a; pawlca riiedby theotherof'sa-id nem-f bets and coacting' successivelywithsaid mummy; of" notches in thePotherof said membeis upon re lativesliding movement-between 'said m enibers,

I)" one'notch-fmieachkey-engaging-defd cililldef and sa'idxnotches beingimilaily as said-devices are spacedy and bel -and adaptedto proje'ct'into the key slot -to; caiise -any one device 5 inhe latter toObStfilQt' movement of said slidable-Tmernbei'; saidpavv' l" and saidnotches paitaking of 'rlati've' mo vemenit; as said sli'dable memberslidjes relative to the other member :d'said pawlii iding into a notch'upon the completion "of the rel ative' 'sli ding movejf dicia for inmentbetween said menibetswhen-said gage has 111 In' a *device; of thecharater described-,- in combination; a fipair df m mber-530m ofwhichadapted to b 'alin'ed vvith;"respe'ctfto the 'key sl'otin a keycyliifidi and the-other"dfiWhiChiSblidably ca'i ried by said firstmentioned "member-for V movement" in" a direction' lengthwise of thekeyslot, one ofsaidmembers having 'a mummy--02;

notchesa a patvl'carfied by thef'othef o f s'aid mem' hers andcoactingsuccessively with said" "oliiralits) of notchestin the other "ofsai'd' menibeisiiponi relative-sliding :movement' between said inernbers there being onenot chfor each key-engaging -d vieein saidcylindenand said notches be'ing spaced iniilarly as said devices are spaced?and:

an adjustable- 'gage'carried by-said slidablemembei a'Ii'd adap d *to pidject into the 7 key-slot =to cause any one device; in ''the' latter'toobstruct m vementtr-samsnuame membmaiu-pam and notohes partaking 'ofrelative r'nove'ment 'as sai slidable men bei' slides relative to t eother 5 theieomp 'enqn of the reianve sliding "movement between-said?members whenjsaid gagehas been v meinber and-said -pavfl riding into anotch upon adjusted o bypass an obstructing'key-engaging' I devicez andmeans foi indicat-ing theadjustment 1 of said gag'ey a :1'21 Inf'adevice of the charac'teifl described; in

vol"

combination; a pair ofnnenibersone of which; is j adapted to bealinedwith *respect' t0 thei'key slot in a key cylinder' andf'the{other 'o'fvvhihis slid v, ably carried by said firstmentioned"memberfor movementin a direction lengthwise of the key slot, one of said members having aplurality of notches a pawl carried by the other of said members andcoacting successively with said plurality of notchesin the otherofsaidmembers ,uponrelative sliding movement between said members, there beingone notch for each key-engaging device insaid cylinder and said notchesbeing spaced-similarly as said devicesare spaced;

and an adjustable gage carried by said slidable member and adapted toproject into the key slot to cause any one device in the lattertoobstruct movement ofsaid slidable member, said pawl and said notchespartaking of relative movement as said slidable member slides relativeto the other member and said pawl riding into a notch uponthe'cOmpletion of the relative sliding. movement between said memberswhen said gage has been adjusted to by-pass an obstructing key-engagingdevice; and means responsive to a resetting of said gage for disengagingsaid pawl'fro m the notch which it has entere .13. In a device of thecharacter described, in

combination, a pair of members, one of which is adapted tobe alined withrespect to the key slot in a key cylinder and the other of which isslidably carried by said first-mentioned member for movement in adirection lengthwise of the key slot, one of saidmemb'ers having aplurality of notches; a pawl carried by. the other of saidmembers .andcoactingsuccessively with said plurality of notches in the other of saidmembers upon relative sliding movement between said members; there beingone notch for each key-engaging device in said; cylinder and saidnotches being spaced similarly as said-devices arespaced;

and an adjustable gage'carried by said slidable member and adapted to:project into the key slot to causeany. one device in the latter toobstruct 40 movement of said slidable member, said pawl and said notchespartaking of relative movement as said slidable member slides relativeto the other memberand said pawl riding into a notchupon the completionof the relative sliding movement between said members when said gage hasbeen adjusted to by-pass .an obstructing key-engaging device; anddirect-reading graduations for me dicating the adjustment of said gage.

14.; In a device of; the character described, in

combination, a; member adapted to be alined with a key slot in a keycylinder; a gage adapted to entersaid key slot; means guiding said gagefor movement relative to said me'mber and providing path of movement forsaid gage which is. 5

' ing into said in line with the key-engaging devices projectkey slot;means mounting said gage for adjustment in--a direction so that saidgage can be given a position such that it may by-pass a key-engagingdevice; andindicating means for identifying thestation of the deviceby-passed v andalso the adjustment of said gage.

15. In adevice of the character described, in

combination, a. member adapted to be alined with a key slot in a'keycylinder; 'a gage adapted to (enter said key slot; meansguiding saidgage for movement relative to said member and providing path of-movement for said gagewhichis in-line vwith-the key-engaging devicesprojecting into saidrkey slot; meansfor adjusting said gage so that itmay by-pass a key-engaging device; means for causing the movement ofsaid gage along said path'tov take place in steps, one for eachkey-engaging device; and means controlled by a, resetting 'oflsaid gagefor permitting asucceeding step of movement to take place.

..-l6., Ina device'of the characterdescribed, in combination, amemberadapted to be alined with a key slot in a key cylinder; agageadaptedto enter. saidkeyslot; means guiding said gage for movementrelative to said memberand providing path of movement for said gagewhich is in line with the key-engaging devices projecting into said keyslot; and means for adjusting said'gage so-that it mayby-pass akey-'engaging-device.

17,111 a device oithe character described, in combination, amember-adapted to bealined with a key. slot in a key cylinder; a gageadapted to entersaid key slot; means guiding said gage-for movementrelative to said memberandproviding path of movement forsaid gagewhichis inline with-the. key-engaging devices projecting into said key slot;means for adjusting. said gage so that it may. by-pa'ssa key-engaging.device; and step-by-step mechanism controlled by said gageadjustingmeans ior, .causingthemovement of said gage along said path tov takeplace inlsuccessivesteps. f.

18. In a device of the characterv described, in

combination, a member adapted to be alined with a key slot in akeycylinder; a gage adapted to enter said key slot; means guiding saidigage. for

movement relativeto said memberand providing path of movement for saidgage which is in line with. the key-engaging devices projecting intosaid key slot; and indicating means movable manually and adapted toadjust said gage so that it will by-pass an obstructing key-engagingde-- V108. 19. In a device of. the character describechin combination, amember adapted to be alinedwith respect to the key slot ina key.cylinder, amemher slidably related to said 'first member for V movementrelative thereto in a direction lengthwise of the key slot, a gagecarried by saidsec 0nd member and adapted upon movement of thelatter toenter saidkey slot along a path such that movement of said gage isobstructed by the key-:

engaging device or devices projecting. into the key slot, and means formanually shifting said' gage to cause it to by-pass'a projectingkeyengaging device. a v I 20. In a device of the character described, incombination, a member adapted to be alined with respect to the keyslotin akeyv cylinden'a memberslidably related .to. said first 'member' for.movement relative thereto in a direction lengthwise of thekey slot, agage carried by said sec- 0nd member and adapted upon movement. of the.

latterto enter said key slot along apath such that movement of saidkey-engaging device or devices projecting intotheikeyv slot, means formanually shifting said gage to cause it to by-pass a projecting key-engaging device, and means responsive to the relative sliding movementbetween said twomembers for identifying the station of akey-engagingdevice by-passed. v 21. In a device of the character described, in

combination, a m'ember adapted to be alined with I 65.-

gage is obstructed by the gagehas been moved r. to just bypass-akey-engagingdevice for indi- 31. Ina device of the'ch'a'racterdescribed, in combination a member having a pronglike part adapted toenter and bottom in the key slot in a' key cylinder and having means forlimiting and fixing'the extent of entry of'said part into said slot,said member being elongated, a gage;

an elongated -member, means slidably interrelating said two members formovement of said second-mentioned member in a'direction lengthwise ofthe key slot, means movably mounting said gageeonto saidsecond-mentioned member so that,

as said second-mentioned member is slid relative to said first-mentionedmember in a directiori toward the key slot, said gage enters the latter'tioned member for identifying the station of a key-engaging deviceby-passed by said gage.

32. In a device of the'character described, in combination, a pair ofmembers adapted upon bodily movement in the direction of the keycylinder axis to enter the key slot in a key cylinder, means mountingsaid members for relative movement with respect to each other in adirection toward or away from each other so as to cause one of saidmembers to by-passa an obstructing key-- engaging device projecting intothe key slot, said mounting means including means wherebysaid one memberis movable in a general direction lengthwise of the other member,whereby the'bypassing of saidfone member of an obstructingplace bymovement lengthwise thereof relative to said other 'membe'ri'key-engaging "device takes and indicating means responsive to relativemovement between said members toward or away from one another fordetermining the projection into the key slot of a by-passed key-engagingdevice? 33. In a device of the character described, in combination, apair of members adapted-upon bodily movement in the direction of the keycylinder axis to enter the key'slot in a key cylinder; means mountingsaid members for relative movement with respect to each other in adirection toward or away from each other one of said members to by-passan obstructing key-engaging device projecting into the key slot,-

said one member is movable in a general directhe by-p'assing of said onemember of an obstructso as to cause 1 20' said mounting. means includingmeans whereby ing key-engaging device takes place by movementlengthwiselthereof relative to said other member, and means responsiveto said second-mentioned relative movement between said members foridentifying the'station of the device by-passed.

HERMAN HANSEN.

